/Engine/Plugins/Runtime/nDisplay/Source/DisplayCluster/Public/Render/Viewport/Containers/DisplayClusterViewport_Context.h
Special flags for nDisplay Viewport context
enum EDisplayClusterViewportContextState { None = 0, HasCalculatedViewPoint = 1 << 0, InvalidViewPoint = 1 << 1, HasCalculatedProjectionMatrix = 1 << 2, HasCalculatedOverscanProjectionMatrix = 1 << 3, InvalidProjectionMatrix = 1 << 4, }